TETRANDKIA 



177 



CLASS IV. 



v 



TETRANDRIA. 



MONOGYNIA. 





, 



of 2 petals 



1 seed; superior: Incor- 



DIFSACUS. 



PORATED. 





chaffy : Seeds like little pillars. 



Receptacle 



SCABIO'SA. Cal. common, of many leaves: Receptacle 

 convex, somewhat chaffy : Seeds crowned ; rolled in 



a cover. 



of 2 petals ; and 2 seed; 



ERIOCAU'LON. Male and female florets incorporated 



in the same head; the former in the centre, the 

 latter in the circumference. 

 CaL common, of many scales. 

 Cup 2 leaves : Bloss. 2 petals. 

 F. Capsules 2 cells, and 2 seeds. 



(3) Flowers of 1 petal; leneath the germen. 



LITTOREI/LA. M. and F. flowers on the same plant. 



Cal. 4 -cleft. 

 M. CaL 4 leaves : Slam. long. 

 F. Cal. none: Style long: SeeddLtmt. 



CENTUN'CULUS. Bloss. wheel-shaped : CaL with 4 



divisions : Caps. 1 cell ; cut round. 



PLANTA'GO. Bloss. bent back as if broken : CaL with 



4 divisions: Caps. 2 cells; cut round. 



EX'ACUM. Bloss. rather bell-shaped : CaL 4 leaves : 



Caps. 2 cells, compressed. 



[Gentiana campestris, and filiformis.] 



(4) Flowers of I petal; beneath, and 4 naked'seed?* 



[Mentha.] 



Vol. II, 



N 





